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Observation system of water injection in fractured zone in coal seam goaf

An observation system and goaf technology, applied in testing machinery, earthwork drilling and mining, etc., can solve the problems of inaccurate measurement of leakage flow and low efficiency in each section of drilling, shorten observation time, improve work efficiency, and operate simple effect

Inactive Publication Date: 2010-11-24
陕西省煤炭地质测量技术中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current equipment used to inject water into the borehole is inefficient, and cannot accurately measure the water loss flow rate of each section of the borehole, so that this downhole upward hole segmented water injection observation method cannot fully demonstrate its superiority

Method used

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  • Observation system of water injection in fractured zone in coal seam goaf
  • Observation system of water injection in fractured zone in coal seam goaf
  • Observation system of water injection in fractured zone in coal seam goaf

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Embodiment Construction

[0034] Such as figure 1 A kind of coal seam mined-out area fissure zone water injection observation system shown, comprises probe pipe 1, inflation control system 2 and water injection control system 3, and described probe pipe 1 (such as figure 2 shown), comprising two inflatable capsules 11, a water injection pipe 13 installed between the two inflatable capsules 11 through a connection block 12, an air pipeline 6 and a water pipeline 5, and the probe 1 is installed in the borehole 4, and the inflatable capsule 11 is in close contact with the wall of the borehole 4 after inflating, so as to achieve a good seal on both ends of the water injection pipe 13 between the inflatable capsules 11, so that the water flowing out from the water injection pipe 13 will not flow along the borehole 4 The direction of flowing out, said water injection pipe 13 is provided with a plurality of water injection holes 131 (such as image 3 shown), the water in the water injection hole 131 flows o...

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Abstract

The invention discloses an observation system of water injection in a fractured zone in a coal seam goaf, comprising a probe, an aeration control system and a water injection control system, wherein the probe comprises two aerating capsules, a water injection pipe installed between the two aerating capsules by connecting pieces, a gas pipeline and a water pipeline; the water injection pipe is provided with a plurality of water injection holes; the gas pipeline and the water pipeline are respectively distributed in the aerating capsules and the water injection pipe; water inlet holes are arranged on the part of the water pipeline in the water injection pipe; an aeration hole is arranged on the part of the gas pipeline in the aerating capsules; the aeration control system comprises a high pressure gas source and a main gas pipeline connected with the high pressure gas source and the gas pipeline; and the water injection control system comprises a high pressure water source and a main water pipeline connected with the high pressure water source and the water pipeline. The system improves the efficiency of the observation method of upward slant hole water injection by sections, can accurately measure the leakage flow of water in each section of the drilling hole and is simple in structure and convenient to use.

Description

technical field [0001] The invention relates to an observation system, in particular to a water injection observation system for a fissure zone in a goaf of a coal seam, which is used for observing the development height and degree of development of the fissure zone in the goaf of the coal seam. Background technique [0002] The traditional observation method of the fissure zone in the goaf of the coal seam is the simple hydrological observation method of ground drilling. Through several boreholes, the height and distribution of the fissure zone and caving zone in the goaf can be determined through the change of flushing fluid consumption during the drilling process. However, once the coal seam is buried deep, not only the drilling workload is large, but The cost is high, the ground construction drilling has a great impact on the ecological environment, and the accuracy of observation is difficult to control. In order to increase the height of observation, save engineering ...

Claims

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Application Information

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IPC IPC(8): E21C39/00
Inventor 王双明范立民张晓团蒋泽泉
Owner 陕西省煤炭地质测量技术中心
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